> Markdown version of [/jobs/ext/2250343-penetration-tester](https://www.wearedevelopers.com/jobs/ext/2250343-penetration-tester). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Penetration Tester - **Company:** Guideposts Trust - **Location:** Cardiff, UK - **Experience:** Experienced - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Software System Penetration Testing, Cyber Security, Web Applications, Vulnerability Analysis - **Published:** August 26, 2026 - **Apply:** https://www.collegerecruiter.com/job/2815166702-penetration-tester ## About the Role We are looking for a skilled Penetration Tester to join our growing team. This role will be performing manual penetration testing duties across several disciplines using the appropriate methodologies. The ideal candidate will have a competent level of technical skills and be confident in finding vulnerabilities across a range of systems. The preparation and presentation of reports and technical information to a high standard is a key function, as is an ability to deliver the information to a non-technical audience. Previous experience in a penetration testing role is essential., * Minimum 2 years' experience in a penetration testing role conducting tests across multiple environments such as web applications, APIs, internal networks, external networks, cloud platforms, and infrastructure. * Hold or working towards a relevant industry certification such as CPSA, CRT, OSCP, CSTM. * Working knowledge of recognised penetration testing methods * Excellent problem solving skills and attention to detail * Degree in cyber security or related field Regrettably, we are unable to offer sponsorship for this opportunity. All applicants must have the right to work in the UK with no restrictions. ## Description Full time, Monday - Friday, 37.5 hours per week. Overview We are looking for a skilled Penetration Tester to join our growing team. This role will be performing manual penetration testing duties across several disciplines using the appropriate methodologies. The ideal candidate will have a competent level of technical skills and be confident in finding vulnerabilities across a range of systems. The preparation and presentation of reports and technical information to a high standard is a key function, as is an ability to deliver the information to a non-technical audience. Previous experience in a penetration testing role is essential. Key Responsibilities * Perform formal and comprehensive application and infrastructure penetration testing engagements. * Provide well-written and concise technical and non-technical reports to the highest standards of written English. * Assist with the delivery of technical accreditations such as Cyber Essentials Plus. * Maintain Company systems to enable an accurate picture of the status of all projects. * Perform vulnerability assessments and provide findings with remediation actions. * Liaise effectively with the Team Lead's and the wider penetration testing team to ensure the best execution and delivery of projects. * Help complete quality assessment checks against the rest of the penetration testing engagements. * During dedicated periods, create and contribute to internal R&D projects such as report automation and testing toolsets. * Liaise with the SOC and Governance Risk & Compliance teams to help maximise overall effectiveness of Penetration Testing activities. * Travel to client sites to conduct onsite testing as required. Person specification * Minimum 2 years' experience in a penetration testing role conducting tests across multiple environments such as web applications, APIs, internal networks, external networks, cloud platforms, and infrastructure. * Hold or working towards a relevant industry certification such as CPSA, CRT, OSCP, CSTM. * Working knowledge of recognised penetration testing methods * Excellent problem solving skills and attention to detail * Degree in cyber security or related field Regrettably, we are unable to offer sponsorship for this opportunity. 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